Superconductivity from perturbative one-gluon exchange in high density quark matter - art. no. 114033

We study color superconductivity in QCD at an asymptotically large chemical potential. In this limit, pairing is dominated by perturbative one-gluon e xchange. We derive the Eliashberg equation for the pairing gap and solve th is equation numerically. Taking into account both magnetic and electric glu on exchanges, we find Delta similar to g(-5)exp(-c/g) with c=3 pi(2)/root 2 , verifying a recent result by Son. For chemical potentials that are of phy sical interest, mu<1 GeV, the calculation ceases to be reliable quantitativ ely, but our results suggest that the gap can be as large as 100 MeV. [S055 6-2821(99)08819-0].